Unravelling the links between plant transpiration, soil water and nitrate movement: impact of high atmospheric CO2 and irrigation strategy.

揭示植物蒸腾、土壤水和硝酸盐运动之间的联系：大气中高二氧化碳浓度和灌溉策略的影响。

• 批准号: LP0453769
• 负责人: Prof Jann Conroy
• 金额: $ 13.58万
• 依托单位: Western Sydney University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-09-07 至 2007-09-06
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0453769
• 关键词: Unravelling; links; between; plant; transpiration

Australia's serious environmental problems, soil salinity and acidity, may be greatly affected by rising atmospheric CO2 and irrigation strategies. This will occur if the movement of soil water and nitrate changes with transpiration. We will generate different transpiration rates by varying atmospheric CO2 above pastures and irrigation strategies in vineyards. The commercial partner's newly developed soil sensors allow, for the first time, simultaneous 3-D measurement of soil water and nitrate in real-time. The results will answer long-standing questions about impacts of transpiration rates on plant nitrogen uptake and generate valuable new knowledge for sustainable management of pastures and horticultural crops.

澳大利亚严重的环境问题，即土壤盐度和酸度，可能会受到大气二氧化碳浓度上升和灌溉策略的极大影响。 如果土壤水和硝酸盐的运动随着蒸腾而变化，就会发生这种情况。 我们将通过改变牧场上方的大气二氧化碳和葡萄园的灌溉策略来产生不同的蒸腾速率。 该商业合作伙伴新开发的土壤传感器首次实现了土壤水和硝酸盐的同步 3D 实时测量。 研究结果将回答有关蒸腾速率对植物氮吸收影响的长期存在的问题，并为牧场和园艺作物的可持续管理提供有价值的新知识。